Billionaires put pop in advocates' push for soda taxes

After years of stamping out soda tax proposals with well-financed campaigns, Big Soda is suddenly finding itself up against bigger adversaries.

Voters and lawmakers in five municipalities such as San Francisco and the county that includes Chicago approved special taxes on sugary drinks last week, with advocates saying the victories point to a change in public attitudes and the beginnings of a movement. What's also changed, though, is that they're now backed by billionaire Michael Bloomberg, who as mayor of New York lost a bruising fight to limit the size of sugary drinks.